a) What is the biological standard potential for O2, H +, H2O reduction half cell at 25 ° C. b) What will be the potential for a) if the pressure of O2 is 0.21 bar?
a) What is the biological standard potential for O2, H +, H2O reduction half cell at 25 ° C. b) What will be the potential for a) if the pressure of O2 is 0.21 bar?
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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a) What is the biological standard potential for O2, H +, H2O reduction half cell at 25 ° C.
b) What will be the potential for a) if the pressure of O2 is 0.21 bar?
![Table A2.i Standard potentials at 298 K in in electrochemical order
Reduction half-reaction
E® /V
Reduction half-reaction
E* /V
Strougly oxidizing
H,XeO, + 2H' +2e"
F2 + 2e" - 2F
O, + 2H* + 2e-
S,0-+ 2e - 25so?-
Ag+ +e - Ag*
Co -
HO, + 2H*+ 2e-
Au*+ e- Au
Pb+ + 2e - Pb+
2HCIO + 2H*+ 2e- Clz + 2H;0
Cet +e - Ce+
2HBro + 2H* + 2e -
Mnoj + 8H* + Se
Mn+
Cu+ +e- Cu*
Sn+ +2e -
XeO3 + 3H20 +3.0
Sn+
+0.16
+0.15
+2.87
AgBr +e - Ag + Br
Tit +e- TI+
2H+ + 20 -
Fet + 3e - F
O2 + H20 + 2e-
Pb+ + 2e - Pb
In* +e" - In
Sn* + 2e
Agl +e" Ag +I
Ni+ + 2e -
Co+ + 2e - Co
In+ + 3e - In
TIt +e
O, + H20
+2.07
+0.07
0.00
+2.05
0, by definition
+ 1.98
- Co?+
-0.04
+1.81
HO; + OH-
-0.08
2H,0
+1.78
-0.13
+1,69
+1.67
-0.14
- Sn
-0.14
+1.63
-0.15
+1.61
Ni
--0.23
Brz + 2H
- Mn* + 4H,O
+1.60
-0.28
+1.51
+ e- Mn2+
Au+ + 3e - Au
-0.34
+1.51
TI
PbSO, + 2e
T* +e-
Cd+ + 2e" - Cd
In+ +e- In*
Cr++e - C+
Fe+ + 2e - Fe
In+ + 2e" - In
S+ 2e - s?-
-0.34
+1.40
Pb +So;-
Cl2 + 2e - 2CI
Crz0 + 14H* + 6e" - 2Cr+ + 7H,0
O, + H20+ 2e - 0z+ 20H
Oz+ 4H* +4e - 2H20
CIo, + 2H+ + 2e
Mno2 +4H* + 2e - Mn2+ + 2H,0
Brz + 2e - 2Br
Pu*t +e - Pu+
NO, +4H* + 3e- NO + 2H,O
2Hg* + 2e" - Hg?*
CIO" + H;O+ 2e" - CI"+ 2OH
Hg* + 2e - Hg
NO, + 2H* +e-
Ag* +e" - Ag
Hg* + 2e - 2Hg
Fe* +e" - Fe2+
--0.36
+1.36
-0.37
+1.33
-0.40
+1.24
-0.40
+1.23
-0.41
CIO, + H,0
+1.23
-0.44
+1.23
-0.44
+1.09
-0.48
+0.97
In2+
Utt +e- U+
C+ + 3e- Cr
Zn+ +2e - Zn
Cd(OH)2 + 2e - Cd + 20H
2H,0 + 2e - H2 + 20H
Cr* + 2e Cr
Mn+ + 2e - Mn
+ 2e - V
Ind+
-0.49
+0.96
-0.61
+0.92
-0.74
+0.89
-0.76
+0.86
+0.80
NO, + H20
-0.81
-0.83
+0.80
-0.91
+0.79
-1.18
+0.77
-1.19
Bro + H20+ 2e - Br + 20H
Hg,SO, + 2e - 2Hg + so?-
Mno + 2H20 + 2e" - MnO2 +40H +0.60
Mno, +e - Mno-
I2+ 2e" - 21
Cu* +e" - Cu
+0.76
+ 2e - Ti
Al+ +3e - Al
U+ +3e" - U
Mg* + 2e
-1.63
+0.62
-1.66
-1.79
+0.56
- Mg
Ce+ + 3e" - Ce
La+ + 3e" - La
Nat +e - Na
-2.36
+0.54
-2.48
+0.52
-2.52
I5 + 2e - 31"
NIOOH + H20 +e - Ni(OH), +OH +0.49
Ag, Cro4 + 2e - 2Ag + Cro
O2 + 2H20 + 4e" - 40H
CIO, + H20 + 2e - Cio; + 20H-
(Fe(CN)6}- +e - [Fe(CN), ]*(4-}
Cu+ + 2e - Cu
Hg, Clh + 2e - 2Hg + 2CI"
ARCI + e - Ag + CI
Bit + 3e" - Bi
+0.53
-2.71
Cat + 2e - Ca
Sr* + 2e Sr
Ba+ + 2e - Ba
-2.87
+0.45
-2.89
+0.40
-2.91
+0.36
Ra+ + 2e - Ra
Cs* +e - Cs
Rb* +e - Rb
Kt +e" - K
Li* +e- Li
-2.92
+0.36
-2.92
+0.34
-2.93
+0.27
-2.93
+0.22
-3.05
+0.20
Strongly reducing](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5b193a11-dcec-4abd-ba55-25a32be576b1%2Ffe4602bb-48f5-4ee8-9fc7-ac93e71438ff%2F58luwuk_processed.png&w=3840&q=75)
Transcribed Image Text:Table A2.i Standard potentials at 298 K in in electrochemical order
Reduction half-reaction
E® /V
Reduction half-reaction
E* /V
Strougly oxidizing
H,XeO, + 2H' +2e"
F2 + 2e" - 2F
O, + 2H* + 2e-
S,0-+ 2e - 25so?-
Ag+ +e - Ag*
Co -
HO, + 2H*+ 2e-
Au*+ e- Au
Pb+ + 2e - Pb+
2HCIO + 2H*+ 2e- Clz + 2H;0
Cet +e - Ce+
2HBro + 2H* + 2e -
Mnoj + 8H* + Se
Mn+
Cu+ +e- Cu*
Sn+ +2e -
XeO3 + 3H20 +3.0
Sn+
+0.16
+0.15
+2.87
AgBr +e - Ag + Br
Tit +e- TI+
2H+ + 20 -
Fet + 3e - F
O2 + H20 + 2e-
Pb+ + 2e - Pb
In* +e" - In
Sn* + 2e
Agl +e" Ag +I
Ni+ + 2e -
Co+ + 2e - Co
In+ + 3e - In
TIt +e
O, + H20
+2.07
+0.07
0.00
+2.05
0, by definition
+ 1.98
- Co?+
-0.04
+1.81
HO; + OH-
-0.08
2H,0
+1.78
-0.13
+1,69
+1.67
-0.14
- Sn
-0.14
+1.63
-0.15
+1.61
Ni
--0.23
Brz + 2H
- Mn* + 4H,O
+1.60
-0.28
+1.51
+ e- Mn2+
Au+ + 3e - Au
-0.34
+1.51
TI
PbSO, + 2e
T* +e-
Cd+ + 2e" - Cd
In+ +e- In*
Cr++e - C+
Fe+ + 2e - Fe
In+ + 2e" - In
S+ 2e - s?-
-0.34
+1.40
Pb +So;-
Cl2 + 2e - 2CI
Crz0 + 14H* + 6e" - 2Cr+ + 7H,0
O, + H20+ 2e - 0z+ 20H
Oz+ 4H* +4e - 2H20
CIo, + 2H+ + 2e
Mno2 +4H* + 2e - Mn2+ + 2H,0
Brz + 2e - 2Br
Pu*t +e - Pu+
NO, +4H* + 3e- NO + 2H,O
2Hg* + 2e" - Hg?*
CIO" + H;O+ 2e" - CI"+ 2OH
Hg* + 2e - Hg
NO, + 2H* +e-
Ag* +e" - Ag
Hg* + 2e - 2Hg
Fe* +e" - Fe2+
--0.36
+1.36
-0.37
+1.33
-0.40
+1.24
-0.40
+1.23
-0.41
CIO, + H,0
+1.23
-0.44
+1.23
-0.44
+1.09
-0.48
+0.97
In2+
Utt +e- U+
C+ + 3e- Cr
Zn+ +2e - Zn
Cd(OH)2 + 2e - Cd + 20H
2H,0 + 2e - H2 + 20H
Cr* + 2e Cr
Mn+ + 2e - Mn
+ 2e - V
Ind+
-0.49
+0.96
-0.61
+0.92
-0.74
+0.89
-0.76
+0.86
+0.80
NO, + H20
-0.81
-0.83
+0.80
-0.91
+0.79
-1.18
+0.77
-1.19
Bro + H20+ 2e - Br + 20H
Hg,SO, + 2e - 2Hg + so?-
Mno + 2H20 + 2e" - MnO2 +40H +0.60
Mno, +e - Mno-
I2+ 2e" - 21
Cu* +e" - Cu
+0.76
+ 2e - Ti
Al+ +3e - Al
U+ +3e" - U
Mg* + 2e
-1.63
+0.62
-1.66
-1.79
+0.56
- Mg
Ce+ + 3e" - Ce
La+ + 3e" - La
Nat +e - Na
-2.36
+0.54
-2.48
+0.52
-2.52
I5 + 2e - 31"
NIOOH + H20 +e - Ni(OH), +OH +0.49
Ag, Cro4 + 2e - 2Ag + Cro
O2 + 2H20 + 4e" - 40H
CIO, + H20 + 2e - Cio; + 20H-
(Fe(CN)6}- +e - [Fe(CN), ]*(4-}
Cu+ + 2e - Cu
Hg, Clh + 2e - 2Hg + 2CI"
ARCI + e - Ag + CI
Bit + 3e" - Bi
+0.53
-2.71
Cat + 2e - Ca
Sr* + 2e Sr
Ba+ + 2e - Ba
-2.87
+0.45
-2.89
+0.40
-2.91
+0.36
Ra+ + 2e - Ra
Cs* +e - Cs
Rb* +e - Rb
Kt +e" - K
Li* +e- Li
-2.92
+0.36
-2.92
+0.34
-2.93
+0.27
-2.93
+0.22
-3.05
+0.20
Strongly reducing
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